Vacuum-insulated bottle.



0. A. BOEHM. VACUUM INSULATED BOTTLE.

APPLIOATION FILE!) DEO.15, 190s.

Patented June 8, 1909.

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our-n1) STATES OSCAR A. BOEHM, OF NEW YORK, N. Y.

VACUUM-INSULATED BOTTLE Specification of Letters Patent.

Application filed December 15, 1908. Serial No. 467,626.

To. all whom it may concern:

Be-it known that I, OSCAR A. BOEHM, citizen of the United States, andresident of New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Vacuum-Insulated Bottles, of which the following is a specification. I

This invention relates to vacuum insulated, double-walled bottles forpreserving hot and cold liquids or other substances.

The invention relates more. particularly to novel and effective meansfor sustaining the inner vessel properly centered within the outervessel, so that any liability of the inner vessel breaking at its neck,is prevented.

In the accompanying drawing: Figure 1 is a vertical longitudinal sectionthrough a bottle embodying my invention; Fig. 2 ,a bottom view of theinner vessel showing it rovided with a number of sustaining tubes;

ig. 3 an enlarged section through part of the bottle showing one of thetubes in position; Fig. 4 a perspective view of a sustaining tube; Fig.5 a longitudinal section thereof showing the ends of the tube sealed,and Fig. 6 a perspective view of a modification of the tube.

The inner vessel A of my improved vacuum insulated bottle is com osed ofa cylindrical section or wall 10, a su stantially semi-glob ular lowersection or bottom 11, and a contracted neck 12. Vessel A is inclos'edwithin an outer vessel B, the shape of which correv sponds,substantially, to that of vessel A, vessel B being provided with acylindrical section 13, a curved bottom 14, and a neck 15. Vessels A andB are preferably made of glass, and their relative sizes aresuch that anarrow chamber 16 is formed between them. The necks 12 and 15 of vesselsA and B re speotively, are fused or molten together, whereby an annularbead 17 is formed, as clearly shown in Fig. 1.

Means must be provided for sustaining the inner vessel A pro erlycentered within outer vessel B so that a l undesirable lateral movementsof the former within the latter are prevented, even when a filled bottleis placed sidewise or receives heavy shocks, as otherwise there isconsiderable liability of the bottle cracking at its neck. Thesesustaining means should preferably support the lower part of the innervessel, as said part is subjected to the greatest deviation from theaxis of the bottle. The means hereinabovereferred to are shown toconsist of a number of posed between the walls of the inner and outervessels"thatthc axis of each stay extends at a substantially right angletothe wall sections which it connects, The drawing shows threeevenlv'distributed stays .01

zone 19 constituting the junction between the cylindrical andsemi-globular sections of the vessels. Tubes 18 are provided with alateral aperture'which may either be made in the form of a longitudinalslot 20, (Fig. 4), or in the formof a perforation 21, (Fig. 6). It isobvious that said opening may be of any other convenient shape or size,the object interior of thetu e, when chamber. 16 is exhausted. Forevacuating the latter, vessel B is provided with a teat 22, which issealed after the air has been exhausted from the chamber.

In manufacturing my improved bottle, the inner vessel is firstcompleted, whereupon the tubes 18 are fused thereto at the desired ointsby properly heating vessel and tubes. In order to facilitate thisoperation, the open ends of each tube 18 ,have previously been sealed bysmall plugs 23 0f molten glass, said the edges of the tube. When vesselA and glass-sealed tubes 18 are brought into contact while being proerly heated, they will thus readily bind. fter vessel A has been rovided with say three tubes 18, (Fig. 2), it is inserted intoouter-vessel B, and necks 12 and 15 are fused together. The outervessel, while being heated at its lower end, is then drawn inward toform curved bottom 14. During the last stage of this operation, theheated bottom 14 will contact with the outer ends of tubes 18 to becomefused there to. Chamber 16 is finally evacuated and 'teat 22 is sealed.7

Although a substantially cylindrical bottle is shown in the drawing, itis obvious that the bottle may be made of any other desired shape, andit is further obvious that the the spirit of my invention.

It will be seen that by my improved con.- .struction, the inner vesselis maintained properly centered within the outer vessel by whichnotwithstanding their lightness, ofier Patented JuneB, 1909.

tubular metallic stays 18, which are so intertubes 18, which are locatedslightly below the thereof being to ermit an evacuation of, the

plugs projecting preferably slightly beyond.

shape and relative size of the sustaining. tubes may be varied, withoutdeparting from means of comparatively small metal tubesgleat resistancein agrial direction. In this I vessel is provided with any projection,in

Way great strength is obtained With a minimum expenditure of metal,which saving of material is very important as the tubes are referablymade of platinum. It will further e seen that neither the inner nor theouter 3. A vacuum insulated bottle comprising a pair of vessels hav'ng avacuum space there between, a pluralit T of apertured metallic tubes insaid space, and a glass plug at each end of each tube, said plugs being[used to the vessels.

4. A vacuum insulated bottle comprising an inner vessel having acylindrical section and a curved bottom, an outer vessel having acylindrical section and a curved bottom, a plurality of aperturedmetallic tubes interposed betwern the vessels slightly below thejunction between the cylindrical sections and bottoms, and a glass plugat each end of each tube, said plugs being fused to the vessels.

Signed at New York city in the county of New York and State of New York.

OSCAR A. BOEHM.

Witnesses:

A. J. KELLEY, ARTHUR E. ZUMPE.

for holding the sustaining means in position, so that a smooth bottle ofsuperior durability is obtained.

I claim:

1. A vacuum insulated bottle comprising a pair of vessels having avacuum space therebetween, and an apertured metallic tube in terposedbetween said vessels and fused thereto.

2. A vacuum insulated bottle comprising a pair of vessels having avacuum space thereetween, and a plurality of apertured metallic tubesinterposed between said vessels and fused thereto.

1 l dentation or other objectionable unevenness I I

